base-files: ipcalc.sh: support bit length as netmask parameter

[openwrt.git] / package / base-files / files / bin / ipcalc.sh

diff --git a/package/base-files/files/bin/ipcalc.sh b/package/base-files/files/bin/ipcalc.sh
index 7463d6b..5d5eac3 100755 (executable)
--- a/package/base-files/files/bin/ipcalc.sh
+++ b/package/base-files/files/bin/ipcalc.sh
@@ -11,7 +11,7 @@ function bitcount(c) {
 }
 
 function ip2int(ip) {
-       for (ret=0,n=split(ip,a,"\."),x=1;x<=n;x++) ret=or(lshift(ret,8),a[x]) 
+       for (ret=0,n=split(ip,a,"\."),x=1;x<=n;x++) ret=or(lshift(ret,8),a[x])
        return ret
 }
 
@@ -31,7 +31,11 @@ BEGIN {
        slpos=index(ARGV[1],"/")
        if (slpos == 0) {
                ipaddr=ip2int(ARGV[1])
-               netmask=ip2int(ARGV[2])
+               dotpos=index(ARGV[2],".")
+               if (dotpos == 0)
+                       netmask=compl32(2**(32-int(ARGV[2]))-1)
+               else
+                       netmask=ip2int(ARGV[2])
        } else {
                ipaddr=ip2int(substr(ARGV[1],0,slpos-1))
                netmask=compl32(2**(32-int(substr(ARGV[1],slpos+1)))-1)